This product is composed of double-stranded DNA fragments of specific molecular weight, mixed with a sample buffer containing blue dye, and is suitable for agarose gel electrophoresis as a DNA molecular weight standard. All fragments in DNA Marker/Ladder are obtained from plasmids after digestion and purification. During electrophoresis, the Marker/Ladder bands are clearer and denser; the mass ratio between bands is more accurate and true. The DNA concentration of the 750 bp fragment in the DL2000 Plus DNA Marker, the 1,000 bp fragment in the DL5000 DNA Marker, the 500 bp fragment in the 100 bp DNA Ladder, and the 5 kb fragment in the 1 kb DNA Ladder is 100 ng/5 μl, and the display is bright Band; the DNA concentration of all other bands is 50 ng/5 μl.   Good stability: it can be stored at room temperature for 6 months, all strips are clear and dense; Easy to operate: a ready-to-use product, you can directly take an appropriate amount of this product for electrophoresis when running the gel.    Store at -20°C; store at 4°C after thawing to avoid repeated freezing and thawing